The Apodida: A Morphological Study |
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Page xiii
... groups . This resolution , however , was not formed at once . The book is written in the order in which the subject was worked out . The first part , which deduces Apus from a carnivo- rous Annelid , was all I at first intended to ...
... groups . This resolution , however , was not formed at once . The book is written in the order in which the subject was worked out . The first part , which deduces Apus from a carnivo- rous Annelid , was all I at first intended to ...
Page xiv
... groups at least— the original form . Here I thought to leave the matter to be followed up by zoologists whose knowledge and experience of the special groups were greater than my own . My curiosity , however , was too great , and after ...
... groups at least— the original form . Here I thought to leave the matter to be followed up by zoologists whose knowledge and experience of the special groups were greater than my own . My curiosity , however , was too great , and after ...
Page 9
... group of modern Crustacea admits of derivation from the Trilobites , all the rest , except Limulus , can be deduced from the Apodidæ . We shall see reasons for believing that it was the develop- ment of the shield , either as bivalve ...
... group of modern Crustacea admits of derivation from the Trilobites , all the rest , except Limulus , can be deduced from the Apodidæ . We shall see reasons for believing that it was the develop- ment of the shield , either as bivalve ...
Page 18
... groups the number of segments is constant , i.e. constant for each group . In deriving such animals with a small but constant number of segments from Annelids with a large and varying number of seg- ments , the ideal transition form ...
... groups the number of segments is constant , i.e. constant for each group . In deriving such animals with a small but constant number of segments from Annelids with a large and varying number of seg- ments , the ideal transition form ...
Page 42
... groups with other , and probably less advantageous , combinations , such as those developed by the Trilobites , have died out . We find here also the origin of the rule that , among the Crustacea , the dorsal parapodia are less ...
... groups with other , and probably less advantageous , combinations , such as those developed by the Trilobites , have died out . We find here also the origin of the rule that , among the Crustacea , the dorsal parapodia are less ...
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Common terms and phrases
2nd Edit 3rd Edit acicular glands animal Annelidan antennæ Apodidæ appendages Apus bending body brain canal carnivorous Annelid chitinous Cirripedia Cladocera cœlom Crustacea cuticle deduce developed diverticula dorsal parapodium dorsal shield eggs ENGLISH epithelium ESSAYS Eurypterus excretory exoskeleton eye of Apus fold function ganglia genital Globe 8vo gradually groups head-shield higher Crustacea HISTORY homology hypodermis Illustrated intestinal jaws labrum larva larvæ lateral limbs of Apus Limulus longitudinal Malacostraca mandibles masticatory ridges maxillæ membrane ment mid-gut modern Crustacea morphological mouth muscle bands musculature Nauplius nephridia nerves number of segments ocelli œsophageal commissures original Annelid Ostracoda pair of limbs paired eyes Phyllopodan POEMS position posterior primitive Crustacean probably Prof prostomium Pterygotus pygidium round rudimentary second antennæ sensory cirrus sensory organs SERMONS shell gland sinus specialised surface theory tion Tracheata Trilobites trunk limbs trunk segments tube unpaired eye ventral parapodia vols
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